<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8"/>
    <title></title>
</head>
<body>
<input id="text" type="text"/>
<button onclick="send()">Send</button>
<button onclick="closeWebSocket()">Close</button>
<div id="message">
</div>
<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
<script>

    var userID = "888";
    var websocket = null;

    $(function () {
        connectWebSocket();
    })

    //建立WebSocket连接
    function connectWebSocket() {
        console.log("开始...");

        //建立webSocket连接
        websocket = new WebSocket("ws://127.0.0.1:8040/test-ws/" + userID);

        //打开webSokcet连接时，回调该函数
        websocket.onopen = function () {
            console.log("onpen");
        }

        //关闭webSocket连接时，回调该函数
        websocket.onclose = function () {
            //关闭连接
            console.log("onclose");
        }

        //接收信息
        websocket.onmessage = function (msg) {
            console.log(msg.data);
        }
    }

    //发送消息
    function send() {
        var postValue = {};
        postValue.id = userID;
        postValue.message = $("#text").val();
        websocket.send(JSON.stringify(postValue));
    }

    //关闭连接
    function closeWebSocket() {
        if (websocket != null) {
            websocket.close();
        }
    }
</script>
</body>
</html>